<template>
  <div>
     <div class="search">
         <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" />
     </div>
     <div
        class="search-content"
        ref="search"
        v-show="keyword">
        <ul>
           <li
              class="search-item border-bottom"
              v-for="item of list"
              :key="item.id"
              @click="handleCityClick(item.name)">
              {{ item.name }}
           </li>
           <li class="search-item border-bottom" v-show="hasNoData">
              没有找到匹配数据
           </li>
        </ul>
     </div>
   </div>
</template>

<script>
 import Bscroll from 'better-scroll'
 import { mapMutations } from 'vuex'
 export default {
    name: 'CitySearch',
    props: {
       cities: Object
    },
    data () {
       return {
          keyword: '',
          list: [],
          timer: null
       }
    },
    computed: {
      hasNoData () {
        return !this.list.length
      }
    },
    watch: {
      keyword () {
         if(this.timer){
            clearTimeout(this.timer)
         }
         if(!this.keyword){
           this.list = []
           return
         }
         this.timer = setTimeout(() => {
            const result = []
            for(let i in this.cities){
              this.cities[i].forEach((value) => {
                 if(value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1){
                     result.push(value)
                 }
              })
            }
            this.list = result
         },100)
      }
    },
    methods: {
       handleCityClick (city) {
          this.changeCity(city)
          this.$router.push('/')
       },
       ...mapMutations(['changeCity'])
    },
    mounted () {
       this.scroll = new Bscroll(this.$refs.search)
    }
 }
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .search
     height: .72rem
     padding: 0 .1rem
     background: $bgColor
     .search-input
        box-sizing: border-box
        width: 100%
        height: .62rem
        padding: 0 .1rem
        line-height: .62rem
        text-align: center
        border-radius: .06rem
        color: #666
  .search-content
       z-index: 1
       overflow: hidden
       position: absolute
       top: 1.58rem
       left: 0
       right: 0
       bottom: 0
       background: #eee
       .search-item
          line-height: .62rem
          padding-left: .2rem
          background: #fff
          color: #666

</style>

